1. Kristen is working at a store and has to move a 65 kg box across the floor. She puts a rope around the box and pulls the rope with a force of 315 N at a 33. If the coefficient of friction is 0.22, what is the acceleration of the box. Include a force diagram.

2 .What is the acceleration of a block that is being pushed across a flat table? The block has a mass of 375 g. The coefficient of kinetic friction between the block and the table is 0.31.

3. Olivia, mass of 56.8 kg, is sitting on a slide that is at an angle of 25. What is the normal force and friction force holding Olivia on the slide? Include a force diagram showing the forces.

4.Jake is applying the brakes of his 2750 kg truck on a dirt road. The highest friction force that the tires can handle without skidding is around 7500 N when traveling at 22 m/s. What is the shortest distance the car can stop safely?

5. Chris and Sam are pushing a 20 kg box across a frictionless field with an acceleration of 1.5m/s. What is the force applied by the weaker person if the stronger person can push three times as hard?

6.Brad is standing by a chair and begins to push the 12 kg chair with a force of 300 N and it begins to move. Once it is moving it only takes 225 N to keep it going. What is the coefficient of static and kinetic friction.

7. Sally is on the top floor of a building and steps into the elevator. She has a mass of 62 kg. When the elevator accelerates downward at a rate of 1.75 m/s, what is her weight as she descends?

8. What is the acceleration of a 5.5 kg block that is being pushed with a forward force of 5 N and a backward force of 2.0 N? Include magnitude and direction.